Due to the Alt-S commit shortcut being the same as the shortcut to open Firefox's History Menu i've lost the ability to quickly commit changes. Is there a workaround to this?
In Firefox, the shortcut becomes Shift-Alt-S. This is actually due to a usability change in Firefox and has changed the behaviour of all short-cut keys that used to be Alt-Key. They've all been switched to Shift-Alt-Key.
IIRC, there is still ongoing (slightly heated) discussion about this over on the Firefox bug tracker.